JP4241743B2 - Disk unit - Google Patents

Description

  The present invention relates to a disc device having a disc and a discriminating mechanism for an insert other than the disc.

  As a conventional disk device having a disk discriminating mechanism, there is one disclosed in Patent Document 1, for example. In this disk apparatus, a plurality of switches and sensors are fixedly arranged in the apparatus, and when the disk inserted into the disk insertion port is transported to the reproduction position in the apparatus, the switches and sensors are moved along with the movement of the disk. It is determined whether the disk is a regular disk based on the process of the sensor transitioning to the on state. At this time, if it is determined that the abnormally shaped disk is inserted and the operation is abnormal, the loading motor is rotated in the direction opposite to the conveyance and ejected.

JP 2002-279716 A

  In a conventional disk device, a switch or a sensor for detecting a disk is fixedly arranged on a transport path to a disk reproduction position, and insertion of a deformed disk or the like is determined. For this reason, there is a problem that if a foreign object having a portion whose dimensions are substantially the same as the outer diameter of the disk is inserted, it may not be determined that the disk is a foreign object and may be transported to the inside of the apparatus and cause abnormal operation. .

  The present invention has been made to solve the above problems, and in addition to discriminating discs having different outer diameters, a disc device capable of accurately discriminating inserts (foreign matter) having substantially the same outer diameter and size as the disc. The purpose is to obtain.

  The disc device according to the present invention is provided at the insertion port of the device, is provided with a biasing force in the direction of abutting each other, and slides in a direction away from the outer shape of the insert, and a sliding process of the lever , The first detection means provided on the lever so that the state is changed by passing through the center hole of at least one of the discs to be discriminated inserted from the insertion slot, and the first detection means is conveyed into the apparatus via the first detection means Second detecting means for changing the state by passage of the inserted insert, an outer diameter determining means for determining the outer diameter of the disk, which is provided in the lever and changes the state as the lever slides, and the outer diameter of the disk, A determination table summarizing the state transition combinations of the first detection means, the second detection means, and the outer diameter determination means according to the presence or absence of the center hole, and the first by the passage of the insert It is provided with an operation determination means for comparing the state transitions of the detection means, the second detection means, and the outer diameter determination means to determine whether or not the disc type corresponds to the outer diameter and whether it is an insert other than the disk. is there.

  According to the present invention, the first detection means that changes state by the passage of the center hole of the disk conveyed in the apparatus, the second detection means that changes state by the passage of the insert conveyed in the apparatus, and the outer diameter of the disk The judgment table summarizing the combinations of the state transitions of the outer diameter discriminating means for discriminating the state transitions of the first and second detection means and the outer diameter discriminating means due to the passage of the insert, and according to the outer diameter Since it is configured to discriminate disc type and whether it is an insert other than a disc, in addition to discriminating regular discs with different outer diameters, inserts (foreign matter) that have substantially the same outer diameter and dimensions as regular discs The effect is that it can be accurately determined.

Embodiment 1 FIG.
FIG. 1 is a top view showing a disc and foreign matter discrimination mechanism of a disc apparatus according to Embodiment 1 of the present invention. In the first embodiment, as a regular disk, there are two types of disks, for example, a small disk having an outer diameter of 8 cm (hereinafter referred to as an 8 cm disk) and a large disk having an outer diameter of 12 cm (hereinafter referred to as a 12 cm disk). Shall be handled. As shown in FIG. 1, the discriminating mechanism according to the first embodiment includes sensors 1 and 2 for detecting the insertion of a disc or a foreign object, a disc outer diameter discriminating switch 3 for discriminating the outer diameter of the disc, and a disc insertion. The levers 4 and 5 provided at the mouth and the springs 6a and 6b for applying a biasing force to the levers 4 and 5 are provided.

  The levers 4 and 5 are slidably arranged on the periphery of the disk insertion slot in the apparatus in the left and right directions in FIG. 1. The levers 6a and 6b are attached to the contact surface indicated by the symbol A from the left and right in FIG. Thus, an urging force is applied so as to contact each other. Further, the levers 4 and 5 are provided with contact portions 4a and 5a with which the inserts contact. When the disc is inserted in the insertion direction indicated by the arrow in FIG. 1, the peripheral edge of the disc comes into contact with the contact portions 4a and 5a. As a result, the force in the disc insertion direction is transmitted to the levers 4 and 5, and the levers 4 and 5 slide gradually to the left and right in FIG. 1 against the biasing force of the springs 6a and 6b, and the disc is inserted into the apparatus. Is done.

  A sensor (first detection means) 1 and a disk outer diameter determination switch (outer diameter determination means) 3 are arranged on a lever 4. The sensor 1 is embodied by, for example, a light transmission sensor or the like, and enters a detection state when light is blocked by an insert, and enters a non-detection state when light is transmitted through the center hole of the inserted disc. Further, the sensor 1 is provided in the lever 4 in such a relationship that the state transition is caused by the passage of at least one center hole of the disc to be discriminated inserted through the insertion slot in the sliding process of the lever 4. The disc outer diameter discriminating switch 3 is turned on when the switch portion 3a and the engaging portion 5b of the lever 5 are engaged as the lever 4 slides, and the switch portion 3a is released from the engagement with the engaging portion 5b. Then it turns off.

  The switch portion 3a of the disc outer diameter discriminating switch 3 and the engaging portion 5b of the lever 5 are arranged to face the levers 4 and 5, and the levers 4 and 5 slide to the left and right in FIG. 1 as the disc is inserted. Then, the levers 4 and 5 come close to each other and are separated as the levers 4 and 5 return to the initial positions by the biasing force of the springs 6a and 6b. With this configuration, it is possible to change the on / off state of the disk outer diameter determination switch 3 in accordance with the outer shape of the insert.

  The sensor (second detection means) 2 is embodied by a light transmission sensor or the like in the same manner as the sensor 1, and enters a detection state when it is shielded by an insert, for example, the light is transmitted through the center hole of a disc transported into the apparatus. When transmitted, it becomes a non-detection state. The sensor 2 is disposed near the center of the apparatus behind the disk transport roller 7 and is detected or not detected by a disk or an insert other than the disk that has been transported to the center of the apparatus by the transport roller 7. Transition. The transport roller 7 transports the inserted disc to the reproduction deck unit 8 inside the apparatus. The reproduction deck unit 8 performs reproduction processing of the disc conveyed to the reproduction position (clamp position) via the conveyance roller 7.

  In addition, although the light transmission sensor was taken as an example as the sensors 1 and 2, any sensor that can detect the center hole of the insert and the disk may be used, for example, a sensor that mechanically detects the unevenness of the surface of the insert. Also good. The disk outer diameter discriminating switch 3 may also be a detection device that detects the slide amount of the levers 4 and 5.

  FIG. 2 is a block diagram showing the disc and foreign matter discrimination processing configuration of the disc apparatus according to the first embodiment. The discrimination processing configuration according to the first embodiment includes a signal detection unit 9, an operation determination unit 10, a storage unit 11, and an operation control unit 12. The storage means 11 is embodied by a memory or the like mounted on the disk device according to the first embodiment, and the state transitions of the sensor 1, the sensor 2, and the disk outer diameter determination switch 3 according to the outer diameter of the disk and the presence or absence of the center hole. An operation determination table (determination table) in which the combinations are stored is stored.

  The signal detection unit 9, the operation determination unit 10, and the operation control unit 12 control, for example, the operation processing device mounted on the disk device according to the present invention by executing a discrimination processing program according to the gist of the present invention. Thus, it can be realized as a specific means in which software and hardware cooperate.

  The signal detection means 9 receives from the sensors 1 and 2 and the disc outer diameter discriminating switch 3 detection and non-detection of the sensors 1 and 2 and the on / off status of the disc outer diameter discriminating switch 3 associated with insertion of the disc and foreign matter as electrical signals. The detection result is output to the operation determination means 10. The motion determination means 10 collates the detection result input from the signal detection means 9 with the information in the motion determination table stored in the storage means 11 to determine whether the insert is a 12 cm disc, an 8 cm disc or a foreign object. And the determination result is output to the operation control means 12.

  The operation control unit 12 controls the rotation direction of the driving motor 13 for the transport roller 7 according to the determination result by the operation determination unit 10. For example, if the determination result is a 12 cm disc or an 8 cm disc, the transport roller 7 is rotated in the forward direction and transported to the playback position (clamp position) of the playback deck unit 8. If it is a foreign object, the transport roller 7 is rotated in the reverse direction and discharged from the insertion port.

  3A and 3B are diagrams showing an operation determination table according to the first embodiment, where FIG. 3A shows a transition of detection results when an 8 cm disc is inserted, FIG. 3B shows a transition of detection results when a 12 cm disc is inserted, and FIG. ) To (f) show transitions of detection results when a foreign object is inserted in various insertion forms. As shown in FIG. 3, the motion determination table includes sensors 1 and 2 according to the outer diameter of the regular disk and the presence or absence of a center hole before the insert is on the transport roller 7 and while it is on the transport roller 7. Detection, non-detection state transition, and disk outer diameter discrimination switch 3 on / off state transition are defined.

  In the following description, for example, it is assumed that the digital value 1 is set for the case where the sensors 1 and 2 detect (shield) the insert, and the inversion value becomes 0 when the sensor 1 and 2 are not detected (transmitted). Further, a digital value 1 is set when the disc outer diameter discriminating switch 3 is turned off, and an inverted value 0 is obtained when the disc outer diameter discriminating switch 3 is turned on. For example, in the operation determination table of the storage unit 11, a 3-bit signal in which digital values representing the states of the sensor 1, the sensor 2, and the disk outer diameter determination switch 3 in each signal detection stage are arranged in order is used as the determination information. Remembered.

  The pre-insertion state, which is the first signal detection stage, is a state where insertion has started to be inserted into the insertion slot of the disk device according to the first embodiment. At this time, the insert does not reach the sensors 1 and 2 and is not detected, and is inserted so as to engage the switch portion 3a of the disc outer diameter determination switch 3 and the engagement portion 5b of the lever 5. In addition, the disk outer diameter discriminating switch 3 is also in the OFF state. In this state, the transport roller 7 is not operating and is waiting to transport the insert into the apparatus.

  In the insertion confirmation state, which is the subsequent signal detection stage, the insert is not inserted so as to engage the switch portion 3a of the disc outer diameter discriminating switch 3 and the engaging portion 5b of the lever 5, but the sensor 1 It is a state that is reached and detected. In the insertion confirmation state, the transport roller 7 rotates in the forward direction and transport of the insert into the apparatus is started. The signal detection results from the sensors 1 and 2 and the disc outer diameter discrimination switch 3 from the pre-insertion state to the insertion confirmation state are the same regardless of whether the insert is a disc or a foreign object. After the insertion confirmation state, the signal detection stage is divided by the state transition of the sensor 1, the sensor 2, and the disk outer diameter determination switch 3. Details will be described later.

Next, the operation will be described.
In the following, the determination process when an 8 cm disc, a 12 cm disc, or a foreign card is inserted will be described.
(1) In the case of 8 cm disc First, the insertion of the 8 cm disc is started from the insertion direction indicated by the arrow in FIG.
In the state before insertion, the 8 cm disc has not reached the sensor 1 and the sensors 1 and 2 are not detected. Further, the 8 cm disc is not inserted so as to engage the switch portion 3a of the disc outer diameter discriminating switch 3 and the engaging portion 5b of the lever 5, and the disc outer diameter discriminating switch 3 is also in the OFF state. Accordingly, the digital values “001” representing the states of the sensor 1, the sensor 2, and the disk outer diameter determination switch 3 are obtained, and a signal of the digital value “001” is output from the signal detection unit 9 to the operation determination unit 10.

  The motion determination means 10 stores the digital value “001” input from the signal detection means 9 in a memory (not shown), and collates this digital value “001” with the determination information in the motion determination table shown in FIG. Since the sensors 1 and 2 are in the non-detection (x) state and the disk outer diameter determination switch 3 is OFF, the current state is determined as the pre-insertion state, and the determination result is output to the operation control means 12. . When the operation control means 12 receives the determination result of the pre-insertion state, the operation control means 12 does not drive the driving motor 13 of the transport roller 7 and sets the transport standby state.

  FIG. 4 is a top view showing the 8 cm disc and the discriminating mechanism in the insertion confirmation state. In order to clarify the relationship between the discriminating mechanism and the disc, the disc is indicated by a broken line, and the lower mechanism passing through the disc is shown. It is described. The same applies to the top view showing the insert and the discriminating mechanism. Further, in the top view showing the insert and the discriminating mechanism after that including this drawing, the illustration of the springs 6a and 6b shown in FIG. 1 is omitted. As shown in FIG. 4, when an 8 cm disc 14a is further inserted and the sensor 1 is shielded from light to enter a detection state, an insertion confirmation state is obtained.

  In the insertion confirmation state, the sensor 1 is shielded and detected by the edge of the 8 cm disc, but the peripheral portion of the 8 cm disc 14 a does not reach the contact portions 4 a and 5 a of the levers 4 and 5, and the disc outer diameter is discriminated. Switch 3 remains off. At this time, the signal detection unit 9 outputs a signal of a digital value “101” indicating the states of the sensor 1, the sensor 2, and the disk outer diameter determination switch 3 to the operation determination unit 10.

  The operation determination unit 10 stores the digital value “101” input from the signal detection unit 9 in a memory (not shown), and stores the digital values “001” and “101” stored in the previous and current stages as shown in FIG. Are compared with the determination information in the operation determination table shown in FIG. 4B, from the state before insertion, the sensor 1 is in the detection (◯) state, the sensor 2 is in the non-detection (×) state, and the disk outer diameter determination switch 3 is turned off. It is determined that the current state is the insertion confirmation state, and the determination result is output to the operation control means 12. When receiving the determination result of the insertion confirmation state, the operation control means 12 starts the conveyance of the 8 cm disc 14a by rotating the driving motor 13 of the conveyance roller 7 in the forward direction.

  When the 8 cm disk 14a is further conveyed into the apparatus, the peripheral edge portion of the 8 cm disk 14a comes into contact with the contact parts 4a and 5a of the levers 4 and 5, and the levers 4 and 5 are slid left and right. When the conveyance of the 8 cm disc 14a proceeds from the insertion confirmation state and the levers 4 and 5 slide to the left and right, the switch portion 3a of the disc outer diameter discriminating switch 3 engages with the engaging portion 5b of the lever 5 to discriminate the disc outer diameter. Switch 3 is turned on. At this time, the position of the center hole 15 of the 8 cm disk 14 a and the position of the sensor 1 do not overlap, and the sensor 1 is shielded from light by the 8 cm disk 14 a and remains in the detection (◯) state.

  At this stage, the signal detection unit 9 outputs a signal of a digital value “100” indicating the states of the sensor 1, the sensor 2, and the disk outer diameter determination switch 3 to the operation determination unit 10. In the operation determination means 10, the digital value “100” input from the signal detection means 9 is stored in a memory (not shown), and the digital values “101” and “100” stored in the previous and current stages are shown in FIG. ), The sensor 1 is in the detection (◯) state, the sensor 2 is in the non-detection (×) state, and the disk outer diameter determination switch 3 is turned on from the previous state. Thus, it is determined that it is unknown whether the inserted object is a large or small disk or a foreign object, and the determination result is output to the operation control means 12. When the operation control means 12 receives the determination result that the insert is unknown, it continues the conveyance by the forward rotation of the drive motor 13.

  Subsequently, when the 8 cm disc 14a is further conveyed from the above state and the levers 4 and 5 are slid left and right until the distance between the contact portions 4a and 5a is about 8 cm, respectively, as shown in FIG. The position of the center hole 15 of the disk and the position of the sensor 1 overlap. As a result, the sensor 1 is light-transmitted and again enters the non-detection (x) state. At this time, the 8 cm disk 14a has not reached the sensor 2, the sensor 2 is in the non-detection (x) state, and the disk outer diameter determination switch 3 remains in the on state.

In this way, the sensor 1 is arranged so that the abutting portions 4a and 5a overlap with the position of the center hole 15 of the 8cm disk 14a when the levers 4 and 5 slide to the extent of the outer diameter of the 8cm disk 14a. The In addition, the sensor 2 is fixed to a position where the abutting portions 4a and 5a extend to the outer diameter of the 8 cm disk 14a, and even if half of the 8 cm disk 14a is inserted into the apparatus, the light is not shielded by the 8 cm disk 14a. Be placed.
When an 8 cm disc is inserted, the above-described sensor 1, sensor 2, and disc outer diameter discriminating switch 3 are in the same state transition regardless of where they are inserted from the center, left side, or right side of the insertion slot of the apparatus.

  At the above-described stage, the signal detection unit 9 outputs a signal of a digital value “000” indicating the state of the sensor 1, the sensor 2, and the disk outer diameter determination switch 3 to the operation determination unit 10. The operation determination means 10 stores the digital value “000” input from the signal detection means 9 in a memory (not shown), and the digital values “100” and “000” stored in the previous and current stages are shown in FIG. Are compared with the determination information in the operation determination table shown in FIG. 2B, the sensor 1 and sensor 2 are in the non-detection (x) state and the disk outer diameter determination switch 3 is turned on from the previous state. 14a and output the determination result to the operation control means 12.

  When the operation control means 12 receives the determination result that the insert is an 8 cm disc 14a, the operation control means 12 continues to rotate the drive motor 13 in the forward direction, and the disc playback position (clamp position) of the playback deck section 8 as shown in FIG. ). Thereby, the reproduction deck unit 8 shifts to the reproduction process of the 8 cm disc 14a.

  Note that an 8 cm disc is being transferred to the playback position (clamp position) after the above-described sensor 1 and sensor 2 are in the non-detection (x) state and the disc outer diameter discrimination switch 3 is on. 14a shields the sensors 1 and 2, and the levers 4 and 5 return to the initial position by the biasing force of the springs 6a and 6b and the disc outer diameter discriminating switch 3 is turned off. 14a may be discriminated (8 cm disc discrimination determination).

(2) In the case of a 12 cm disc First, insertion of a 12 cm disc is started from the insertion direction indicated by the arrow in FIG.
In the state before insertion, the 12 cm disc has not reached the sensor 1 and the sensors 1 and 2 are not detected. Further, the 12 cm disc is not inserted so as to engage the switch portion 3a of the disc outer diameter discriminating switch 3 and the engaging portion 5b of the lever 5, and the disc outer diameter discriminating switch 3 is also in the OFF state. Therefore, a signal having a digital value “001” is output from the signal detection unit 9 to the operation determination unit 10.

  The operation determination unit 10 stores the digital value “001” input from the signal detection unit 9 in a memory (not shown) and collates the digital value “001” with the determination information in the operation determination table shown in FIG. Thus, since the sensors 1 and 2 are in the non-detection (x) state and the disk outer diameter determination switch 3 is off, the current state is determined as the pre-insertion state, and the determination result is the operation control means 12. Output to. When the operation control means 12 receives the determination result of the pre-insertion state, it does not drive the drive motor 13 of the transport roller 7 and sets the transport standby state.

  FIG. 7 is a top view showing the 12 cm disc and the discriminating mechanism in the insertion confirmation state. When the 12 cm disk 14b is further inserted and the sensor 1 is shielded from light to enter the detection state, the insertion confirmation state is obtained. In the insertion confirmation state, as shown in FIG. 7, the sensor 1 is shielded and detected by the edge of the 12 cm disc, but the peripheral edge of the 12 cm disc 14 b reaches the contact portions 4 a and 5 a of the levers 4 and 5. The disk outer diameter discriminating switch 3 remains off. At this stage, the signal detection unit 9 outputs a signal of a digital value “101” indicating the states of the sensor 1, the sensor 2, and the disk outer diameter determination switch 3 to the operation determination unit 10.

  The operation determination means 10 stores the digital value “101” input from the signal detection means 9 in a memory (not shown), and the digital values “001” and “101” stored in the previous and current stages are shown in FIG. Are compared with the determination information in the operation determination table shown in FIG. 4B, from the state before insertion, the sensor 1 is in the detection (◯) state, the sensor 2 is in the non-detection (×) state, and the disk outer diameter determination switch 3 is turned off. The current state is determined as the insertion confirmation state, and the determination result is output to the operation control means 12. When receiving the determination result of the insertion confirmation state, the operation control means 12 starts the conveyance of the 12 cm disk 14b by rotating the driving motor 13 of the conveyance roller 7 in the forward direction.

  When the 12 cm disk 14 b is further conveyed into the apparatus, the peripheral edge of the 12 cm disk 14 b comes into contact with the contact parts 4 a and 5 a of the levers 4 and 5 and slides the levers 4 and 5 left and right. When the conveyance of the 12 cm disk 14b proceeds from the insertion confirmation state, the levers 4 and 5 slide to the left and right until the 8 cm disk 14a is determined and the distance between the contact portions 4a and 5a is about 8 cm. At this time, as shown in FIG. 8, the switch portion 3a of the disc outer diameter discriminating switch 3 engages with the engaging portion 5b of the lever 5 to turn on the disc outer diameter discriminating switch 3, but the 12 cm disc 14b Then, the position of the center hole 15 and the position of the sensor 1 do not overlap, and the sensor 1 remains in the detection (◯) state. The sensor 2 has not been reached and is in a non-detection (x) state.

  At this stage, the signal detection unit 9 outputs a signal of a digital value “100” indicating the states of the sensor 1, the sensor 2, and the disk outer diameter determination switch 3 to the operation determination unit 10. In the operation determination means 10, the digital value “100” input from the signal detection means 9 is stored in a memory (not shown), and the digital values “101” and “100” stored in the previous and current stages are shown in FIG. Compared with the determination information in the operation determination table shown in FIG. 3, from the previous state, the sensor 1 is in the detection (O) state, the sensor 2 is in the non-detection (X) state, and the disk outer diameter determination switch 3 is turned on. Thus, it is determined that it is unknown whether the inserted disk is a large or small disk or a foreign object, and the determination result is output to the operation control means 12. When the operation control means 12 receives the determination result that the insert is unknown, the operation control means 12 continues the conveyance by the forward rotation of the drive motor 13.

  Subsequently, when the 12 cm disk 14b is further transported from the above state, as shown in FIG. 9, the peripheral part of the 12 cm disk 14b reaches the sensor 2 and is detected while the disk outer diameter discriminating switch 3 remains on. (○) Set to the state. Further, the sensor 1 is shielded from light by the 12 cm disk 14b and remains in the detection (◯) state.

  At this stage, the signal detection unit 9 outputs a signal of a digital value “110” indicating the states of the sensor 1, the sensor 2, and the disk outer diameter determination switch 3 to the operation determination unit 10. In the operation determination unit 10, the digital value “110” input from the signal detection unit 9 is stored in a memory (not shown), and the digital values “100” and “110” stored in the previous and current stages are shown in FIG. Are compared with the determination information in the operation determination table shown in Fig. 2, and the sensor 1 and 2 are in the detection (O) state and the disc outer diameter determination switch 3 is turned on from the previous state, so It is determined that the disk or the foreign object is unknown, and the determination result is output to the operation control means 12. When the operation control means 12 receives the determination result that the insert is unknown, the operation control means 12 continues the conveyance by the forward rotation of the drive motor 13.

  As described in the case of inserting an 8 cm disc, the sensor 2 has a space between the contact portions 4a and 5a that extends to the outer diameter of the 8 cm disc 14a, and even if half of the 8 cm disc 14a is inserted into the apparatus, 14a is arranged at a position not shielded from light. In addition to this, when a 12 cm disk 14b is inserted, the engaging part of the switch part 3a of the disk outer diameter discrimination switch 3 and the lever 5 even if the contact part 4a, 5a is conveyed deeper than 8 cm. Before being disengaged from 5b, it is placed at a position where it is shielded by the 12cm disk 14b.

  When the levers 4 and 5 are slid left and right, the switch portion 3a of the disc outer diameter discriminating switch 3 engages with the engaging portion 5b by the length of the engaging portion 5b of the lever 5 in the sliding direction. The outer diameter discrimination switch 3 is turned on. When the 12 cm disk 14b is conveyed further from the above state, as shown in FIG. 10, the switch part 3a is disengaged from the engaging part 5b, and the disk outer diameter discriminating switch 3 is turned off. . At this time, the sensors 1 and 2 are shielded from light by the 12 cm disk 14b and remain in the detection (◯) state.

  At this stage, the signal detection unit 9 outputs a signal of a digital value “111” indicating the states of the sensor 1, the sensor 2, and the disk outer diameter determination switch 3 to the operation determination unit 10. The operation determination means 10 stores the digital value “111” input from the signal detection means 9 in a memory (not shown), and the digital values “110” and “111” stored in the previous and current stages are shown in FIG. Compared with the determination information in the operation determination table shown in FIG. 5, the sensor 1 and sensor 2 are in the detection (◯) state and the disk outer diameter determination switch 3 is turned off from the previous state, so that the insert is a 12 cm disk. 14b, and outputs the determination result to the operation control means 12.

  When the operation control means 12 receives the determination result that the insert is a 12 cm disk 14b, the drive motor 13 continues to rotate in the forward direction, and the disk reproduction position (clamp position) of the reproduction deck unit 8 as shown in FIG. ). Thereby, the reproduction deck unit 8 shifts to the reproduction process of the 12 cm disc 14b.

(3) When a rectangular card-like foreign matter is inserted from the longitudinal direction from the center of the insertion slot The card-like foreign matter is, for example, a rectangle having a vertical length of 8.56 cm and a horizontal length of 5.4 cm. Is considered to have a size approximately equal to the outer diameter of the 8 cm disc. If this card-like foreign material is inserted in the vertical direction, there is a possibility that the conventional disc discriminating mechanism cannot be distinguished from an 8 cm disc. On the other hand, the disc device according to the first embodiment can accurately discriminate between a regular disc and a card-like foreign object as will be described later.

  First, a card-like foreign material is inserted from the center of the insertion slot. In the state before insertion, the card-like foreign matter has not reached the sensor 1, and the sensors 1 and 2 are not detected. Further, the switch portion 3a of the disk outer diameter determination switch 3 and the engagement portion 5b of the lever 5 are not engaged, and the disk outer diameter determination switch 3 is also in the OFF state. At this stage, the signal detection unit 9 outputs a signal having a digital value “001” to the operation determination unit 10.

  The motion determination means 10 stores the digital value “001” input from the signal detection means 9 in a memory (not shown), and collates this digital value “001” with the determination information in the motion determination table shown in FIG. Thus, since the sensors 1 and 2 are in the non-detection (×) state and the disk outer diameter determination switch 3 is OFF, the current state is determined as the pre-insertion state, and the determination result is output to the operation control means 12. . When the operation control means 12 receives the determination result of the pre-insertion state, it does not drive the drive motor 13 of the transport roller 7 and sets the transport standby state.

  FIG. 12 is a top view showing the card-like foreign object and the discrimination mechanism in the insertion confirmation state. When the card-like foreign object 16 is further inserted and the sensor 1 is shielded from light to enter the detection state, the insertion confirmation state is obtained. In the insertion confirmation state, as shown in FIG. 12, the sensor 1 is detected by being shielded from light at the end of the card-like foreign matter 16, but the end of the card-like foreign matter 16 is in contact with the contact portions 4 a and 5 a of the levers 4 and 5. The disc outer diameter discriminating switch 3 remains off. At this stage, the signal detection unit 9 outputs a signal of a digital value “101” indicating the states of the sensor 1, the sensor 2, and the disk outer diameter determination switch 3 to the operation determination unit 10.

  The operation determination means 10 stores the digital value “101” input from the signal detection means 9 in a memory (not shown), and the digital values “001” and “101” stored in the previous and current stages are shown in FIG. Are compared with the determination information in the operation determination table shown in FIG. 4B, from the state before insertion, the sensor 1 is in the detection (◯) state, the sensor 2 is in the non-detection (×) state, and the disk outer diameter determination switch 3 is turned off. The current state is determined as the insertion confirmation state, and the determination result is output to the operation control means 12. When the operation control unit 12 receives the determination result of the insertion confirmation state, the operation control unit 12 starts the forward rotation of the driving motor 13 of the transport roller 7.

  The card-like foreign material 16 is further conveyed from the insertion confirmation state. At this time, as shown in FIG. 13, the end of the card-like foreign material 16 having the above-described dimensions reaches the sensor 2 to be in a detection (◯) state. Further, the sensor 1 is shielded from light by the card-like foreign material 16 and remains in the detection (◯) state. On the other hand, since the horizontal dimension of the card-like foreign matter 16 is 5.4 cm, the end of the card-like foreign matter 16 does not come into contact with the contact portions 4a and 5a when inserted from the center of the insertion slot. The disk outer diameter discriminating switch 3 remains off.

  At this stage, the signal detection unit 9 outputs a signal of a digital value “111” indicating the states of the sensor 1, the sensor 2, and the disk outer diameter determination switch 3 to the operation determination unit 10. The operation determination means 10 stores the digital value “111” input from the signal detection means 9 in a memory (not shown), and the digital values “101” and “111” stored in the previous and current stages and FIG. Are compared with the determination information in the operation determination table shown in FIG. 2B, from the insertion confirmation state, the sensors 1 and 2 are in the detection (O) state, and the disk outer diameter determination switch 3 is turned off. Instead, it is determined that there is a foreign object, and the determination result is output to the operation control means 12. When the operation control means 12 receives the determination result that the inserted object is the card-like foreign material 16, the operation control means 12 rotates the drive motor 13 in the reverse direction and discharges it.

  In this way, the card-like foreign material 16 having a vertical dimension close to the outer diameter of the disk handled as a regular disk is inserted, and the sensors 1 and 2 are detected or not detected according to the outer diameter of the regular disk. However, the disc outer diameter discriminating switch 3 arranged on the lever that slides along the outer shape of the regular disc does not enter the on / off state according to the regular disc. Thereby, it is possible to accurately discriminate between a regular disk and a foreign object.

(4) When a rectangular card-like foreign substance is inserted from the longitudinal direction from the right side of the insertion slot As in the case of (3), a card-like foreign substance having a length of 8.56 cm and a width of 5.4 cm is considered. If this card-like foreign material is inserted from the vertical direction, there is a possibility that the conventional disc discriminating mechanism cannot be distinguished from an 8 cm disc. On the other hand, the disc device according to the first embodiment can accurately discriminate between a regular disc and a card-like foreign object, as will be described later.

  First, a card-like foreign material is inserted from the right side of the insertion slot. In the state before insertion, the card-like foreign matter has not reached the sensor 1, and the sensors 1 and 2 are not detected. Further, the switch portion 3a of the disk outer diameter determination switch 3 and the engagement portion 5b of the lever 5 are not engaged, and the disk outer diameter determination switch 3 is also in the OFF state. Therefore, a signal having a digital value “001” is output from the signal detection unit 9 to the operation determination unit 10.

  The motion determination means 10 stores the digital value “001” input from the signal detection means 9 in a memory (not shown) and collates this digital value “001” with the determination information in the motion determination table shown in FIG. Then, since the sensors 1 and 2 are not detected (×) and the disk outer diameter determination switch 3 is OFF, the current state is determined as the pre-insertion state, and the determination result is output to the operation control means 12. When the operation control means 12 receives the determination result of the pre-insertion state, it does not drive the drive motor 13 of the transport roller 7 and sets the transport standby state.

  FIG. 14 is a top view showing the card-like foreign object and the discriminating mechanism in the insertion confirmation state when inserted from the right side of the insertion slot. When the card-like foreign material 16 is further inserted from the state before insertion, the sensor 1 is shielded from light and enters the detection state, and enters the insertion confirmation state.

  In the insertion confirmation state, as shown in FIG. 14, the end of the card-like foreign material 16 is detected by shielding the sensor 1. On the other hand, since the horizontal dimension of the card-like foreign matter 16 is 5.4 cm, when the card-like foreign matter 16 is inserted from the right side of the insertion slot, the end thereof comes into contact with the contact portion 4 a of the lever 4. However, it does not contact the contact portion 5a of the lever 5. Accordingly, the disk outer diameter discriminating switch 3 remains off. At this time, the signal detection unit 9 outputs a signal of a digital value “101” indicating the states of the sensor 1, the sensor 2, and the disk outer diameter determination switch 3 to the operation determination unit 10.

  In the operation determination unit 10, the digital value “101” input from the signal detection unit 9 is stored in a memory (not shown), and the digital values “001” and “101” stored in the previous and current stages are shown in FIG. Are compared with the determination information in the operation determination table shown in FIG. 4B, from the state before insertion, the sensor 1 is in the detection (◯) state, the sensor 2 is in the non-detection (×) state, and the disk outer diameter determination switch 3 is turned off. The current state is determined as the insertion confirmation state, and the determination result is output to the operation control means 12. When the operation control unit 12 receives the determination result of the insertion confirmation state, the operation control unit 12 starts the forward rotation of the driving motor 13 of the transport roller 7.

  The card-like foreign material 16 is further conveyed from the insertion confirmation state. At this time, the card-like foreign material 16 having the above-mentioned dimensions is removed from the sensor 1 and is not shielded from light as shown in FIG. Thereby, the sensor 1 will be in a non-detection (x) state. On the other hand, when inserted from the right side of the insertion slot, even if the card-like foreign material 16 reaches the position of the sensor 2, the width is not sufficient and light is not shielded. Therefore, the sensor 2 remains undetected (x). Further, when inserting from the right side of the insertion slot, the end of the card-like foreign material 16 comes into contact with the contact portion 4a. However, if the levers 4 and 5 do not slide, the disk outer diameter determination switch 3 is not turned on. It remains off. In FIG. 15, the levers 4 and 5 are moved to the right side even when the contact between the card-like foreign material 16 and the contact portion 4a is released, but actually the lever 6 is returned to the initial center position by the biasing force of the spring 6a. Become.

  At this stage (the stage where the sensor 1 is not detected), the signal detection means 9 sends a signal of a digital value “001” indicating the state of the sensor 1, sensor 2, and disk outer diameter determination switch 3 to the operation determination means 10. Output. In the operation determination means 10, the digital value “001” input from the signal detection means 9 is stored in a memory (not shown), and the digital values “101” and “001” stored in the previous and current stages are shown in FIG. Are compared with the determination information of the operation determination table shown in FIG. 2B, from the insertion confirmation state, the sensors 1 and 2 are in the non-detection (x) state, and the disc outer diameter determination switch 3 is turned off. It is determined that there is a foreign object, not a disk, and the determination result is output to the operation control means 12. When the operation control means 12 receives the determination result that the inserted object is the card-like foreign material 16, the operation control means 12 rotates the drive motor 13 in the reverse direction and discharges it.

  As described above, even when the card-like foreign material 16 having a vertical dimension close to the outer diameter of a disk handled as a regular disk is inserted from the right side of the insertion slot, the detection of the sensors 1 and 2 according to the outer diameter of the regular disk. The disc outer diameter discriminating switch 3 arranged on the lever that slides along the outer shape of the regular disc does not enter the non-detection state and does not enter the on / off state according to the regular disc. Thereby, it is possible to accurately discriminate between a regular disk and a foreign object.

(5) When a rectangular card-like foreign substance is inserted from the longitudinal direction from the left side of the insertion slot As in the case of (4), a card-like foreign substance having a length of 8.56 cm and a width of 5.4 cm is considered. If this card-like foreign material is inserted from the vertical direction, there is a possibility that the conventional disc discriminating mechanism cannot be distinguished from an 8 cm disc. On the other hand, the disc device according to the first embodiment can accurately discriminate between a regular disc and a card-like foreign object, as will be described later.

  First, a card-like foreign material is inserted from the left side of the insertion slot. In the state before insertion, the card-like foreign matter has not reached the sensor 1, and the sensors 1 and 2 are not detected. Further, the switch portion 3a of the disk outer diameter determination switch 3 and the engagement portion 5b of the lever 5 are not engaged, and the disk outer diameter determination switch 3 is also in the OFF state. Therefore, a signal having a digital value “001” is output from the signal detection unit 9 to the operation determination unit 10.

  The motion determination means 10 stores the digital value “001” input from the signal detection means 9 in a memory (not shown), and collates this digital value “001” with the determination information in the motion determination table shown in FIG. Since the sensors 1 and 2 are not detected (x) and the disk outer diameter determination switch 3 is OFF, the current state is determined as the pre-insertion state, and the determination result is output to the operation control means 12. When the operation control means 12 receives the determination result of the pre-insertion state, it does not drive the drive motor 13 of the transport roller 7 and sets the transport standby state.

  FIG. 16 is a top view showing the card-like foreign object and the discriminating mechanism in the insertion confirmation state when inserted from the left side of the insertion slot. When the card-like foreign material 16 is further inserted from the state before insertion, the sensor 1 is shielded from light and enters the detection state, and enters the insertion confirmation state.

  In the insertion confirmation state, as shown in FIG. 16, the end of the card-like foreign material 16 is detected by shielding the sensor 1. On the other hand, since the horizontal dimension of the card-like foreign material 16 is 5.4 cm, when the card-like foreign material 16 is inserted from the left side of the insertion slot, the end of the card-like foreign material 16 comes into contact with the contact portion 5 a of the lever 5. However, it does not contact the contact portion 4a of the lever 4. Accordingly, the disk outer diameter discriminating switch 3 remains off. At this time, the signal detection unit 9 outputs a signal of a digital value “101” indicating the states of the sensor 1, the sensor 2, and the disk outer diameter determination switch 3 to the operation determination unit 10.

  The operation determination means 10 stores the digital value “101” input from the signal detection means 9 in a memory (not shown) and stores the digital values “001” and “101” stored at the previous and current stages as shown in FIG. Are compared with the determination information in the operation determination table shown in FIG. 4B, from the state before insertion, the sensor 1 is in the detection (◯) state, the sensor 2 is in the non-detection (×) state, and the disk outer diameter determination switch 3 is turned off. The current state is determined as the insertion confirmation state, and the determination result is output to the operation control means 12. When the operation control unit 12 receives the determination result of the insertion confirmation state, the operation control unit 12 starts the forward rotation of the driving motor 13 of the transport roller 7.

  The card-like foreign material 16 is further conveyed from the insertion confirmation state. At this time, the card-like foreign material 16 having the above-described dimensions is removed from the sensor 1 and is not shielded from light as shown in FIG. Thereby, the sensor 1 will be in a non-detection (x) state. On the other hand, when inserted from the left side of the insertion slot, even if the card-like foreign material 16 reaches the position of the sensor 2, the width is not sufficient and light is not shielded. Therefore, the sensor 2 remains undetected (x). Further, when inserting from the left side of the insertion slot, even if the end of the card-like foreign material 16 contacts the contact portion 5a, the disk outer diameter determination switch 3 is not turned on unless the levers 4 and 5 slide. It remains off. In FIG. 17, even if the contact between the card-like foreign material 16 and the contact portion 5a is released, the levers 4 and 5 are shifted to the left side. However, the lever 6 is actually returned to the initial center position by the biasing force of the spring 6b. Become.

  At this stage (the stage where the sensor 1 is not detected), the signal detection means 9 sends a signal of a digital value “001” indicating the state of the sensor 1, sensor 2, and disk outer diameter determination switch 3 to the operation determination means 10. Output. In the operation determination means 10, the digital value “001” input from the signal detection means 9 is stored in a memory (not shown), and the digital values “101” and “001” stored in the previous and current stages are shown in FIG. Are compared with the determination information in the operation determination table shown in FIG. 2B, from the insertion confirmation state, the sensors 1 and 2 are in the non-detection (x) state, and the disc outer diameter discrimination switch 3 is turned off. Instead, it is determined that the object is a foreign substance, and the determination result is output to the operation control means 12. When the operation control means 12 receives the determination result that the inserted object is the card-like foreign material 16, the operation control means 12 rotates the drive motor 13 in the reverse direction and discharges it.

  As described above, even if the card-like foreign material 16 having a vertical dimension close to the outer diameter dimension of a disk handled as a regular disk is inserted from the left side of the insertion slot, the detection of the sensors 1 and 2 according to the outer diameter dimension of the regular disk. The disc outer diameter discriminating switch 3 arranged on the lever that slides along the outer shape of the regular disc does not enter the non-detection state and does not enter the on / off state according to the regular disc. Thereby, it is possible to accurately discriminate between a regular disk and a foreign object.

  Since the sensor 2 is disposed on the transport path of the center hole 15 of the 12 cm disk 14b transported into the apparatus, the sensor 2 changes the state of the 12 cm disk 14b based on the center hole 15. The determination may be confirmed.

(6) When a rectangular card-like foreign material is inserted laterally from the center of the insertion slot As in the case of (5), a card-like foreign material having a length of 8.56 cm and a width of 5.4 cm is considered. If this card-like foreign material is inserted from the side, there is a possibility that the conventional disc discriminating mechanism cannot be distinguished from the 8 cm disc. On the other hand, the disc device according to the first embodiment can accurately discriminate between a regular disc and a card-like foreign object, as will be described later.

  First, a card-like foreign material is inserted sideways from the center of the insertion slot. In the state before insertion, the card-like foreign matter has not reached the sensor 1, and the sensors 1 and 2 are not detected. Further, the switch portion 3a of the disk outer diameter determination switch 3 and the engagement portion 5b of the lever 5 are not engaged, and the disk outer diameter determination switch 3 is also in the OFF state. Therefore, a signal having a digital value “001” is output from the signal detection unit 9 to the operation determination unit 10.

  The motion determination means 10 stores the digital value “001” input from the signal detection means 9 in a memory (not shown), and collates this digital value “001” with the determination information in the motion determination table shown in FIG. Since the sensors 1 and 2 are not detected (x) and the disc outer diameter determination switch 3 is OFF, the current state is determined as the pre-insertion state, and the determination result is output to the operation control means 12. . When the operation control means 12 receives the determination result of the pre-insertion state, it does not drive the drive motor 13 of the transport roller 7 and sets the transport standby state.

  Thereafter, in order to further insert the card-like foreign material 16 having the above dimensions into the apparatus in the lateral direction, for example, by tilting the corner of the card-like foreign material 16 in the insertion direction and bringing it into contact with both of the contacts 4a and 5a, It is necessary to slide the levers 4 and 5 so as to spread them out. At this time, the card-like foreign material 16 is detected (◯) by shielding the sensor 1, does not reach the sensor 2, is not detected (×), and the switch 3 a of the disk outer diameter determination switch 3 and the lever 5 Since the levers 4 and 5 are not slid until the engaging portion 5b is engaged, the disk outer diameter determination switch 3 remains off.

  At this stage (the stage where the sensor 1 is in the detection state), the signal detection means 9 sends a signal of a digital value “101” indicating the states of the sensor 1, sensor 2, and disk outer diameter determination switch 3 to the operation determination means 10. Output.

  The operation determination means 10 stores the digital value “101” input from the signal detection means 9 in a memory (not shown), and the digital values “001” and “101” stored in the previous and current stages are shown in FIG. Are compared with the determination information in the operation determination table shown in FIG. 4B, from the state before insertion, the sensor 1 is in the detection (◯) state, the sensor 2 is in the non-detection (×) state, and the disk outer diameter determination switch 3 is turned off. The current state is determined as the insertion confirmation state, and the determination result is output to the operation control means 12. When the operation control unit 12 receives the determination result of the insertion confirmation state, the operation control unit 12 starts the forward rotation of the driving motor 13 of the transport roller 7.

  FIG. 18 is a top view showing the card-like foreign material and the discrimination mechanism when the card-like foreign material 16 is inserted sideways from the insertion confirmation state. When the card-like foreign material 16 is further inserted from the insertion confirmation state, the sensor 1 is shielded from light by the card-like foreign material 16 to enter the detection state, and the insertion confirmation state is entered. In this state, the card-like foreign material 16 does not reach the sensor 2 and remains undetected (x).

  On the other hand, since the vertical dimension of the card-like foreign matter 16 is 8.56 cm, when the card-like foreign matter 16 is completely turned sideways at the insertion port, the card-like foreign matter 16 is placed on the contact portions 4a and 5a of the levers 4 and 5. The end portions of the discs are in contact with each other, the levers 4 and 5 are pushed open, the switch portion 3a of the disc outer diameter discriminating switch 3 and the engaging portion 5b of the lever 5 are engaged, and the disc outer discriminating switch 3 is turned on. .

  At this stage (stage where the disc outer diameter discriminating switch 3 is turned on), the signal detecting means 9 operates a signal of a digital value “100” indicating the state of the sensor 1, sensor 2, and disc outer diameter discriminating switch 3. Output to determination means 10. The operation determination means 10 stores the digital value “100” input from the signal detection means 9 in a memory (not shown), and stores the digital values “101” and “100” stored at the previous and current stages as shown in FIG. Are compared with the determination information in the operation determination table shown in FIG. 4B, from the insertion confirmation state, the sensor 1 is in the detection (◯) state, the sensor 2 is in the non-detection (×) state, and the disk outer diameter determination switch 3 is turned on. Then, it is determined that it is unknown whether the insert is a large or small disk or a foreign object, and the determination result is output to the operation control means 12. When the operation control means 12 receives the determination result that the insert is unknown, the operation control means 12 continues the conveyance by the forward rotation of the drive motor 13.

When the card-like foreign material 16 is further conveyed from the above-described state, the card-like foreign material 16 having the above-mentioned dimensions is detected by being shielded and detected by the end portion reaching the sensor 2 as shown in FIG. The light is shielded and remains in the detection state. That is, unlike the case of an 8 cm disc, the card-like foreign material 16 does not have a center hole, so the sensor 1 is not detected.
On the other hand, since the vertical dimension of the card-like foreign material 16 is 8.56 cm, which is substantially equal to the outer diameter of the 8 cm disc, the relationship between the switch portion 3 a of the disc outer diameter discriminating switch 3 and the engaging portion 5 b of the lever 5. The combined state continues, and the disk outer diameter discriminating switch 3 remains on.

  At this stage (the stage where the sensor 2 is in the detection state), the signal detection means 9 sends a signal of a digital value “110” indicating the state of the sensor 1, sensor 2, and disk outer diameter determination switch 3 to the operation determination means 10. Output. In the operation determination unit 10, the digital value “110” input from the signal detection unit 9 is stored in a memory (not shown), and the digital values “100” and “110” stored in the previous and current stages are shown in FIG. Compared with the determination information in the operation determination table shown in FIG. 4, the sensor 1 and 2 are in the detection (◯) state from the previous state, and the disc outer diameter discrimination switch 3 is turned on. However, it is determined that it is unknown whether it is a 12 cm disc or a foreign object, and the determination result is output to the operation control means 12. When the operation control means 12 receives the determination result that the insert is unknown, the operation control means 12 continues the conveyance by the forward rotation of the drive motor 13.

  When the card-like foreign material 16 is further conveyed from the above-described state, the card-like foreign material 16 having the above-described dimensions is removed from the sensor 1 and is not shielded as shown in FIG. Thereby, the sensor 1 will be in a non-detection (x) state. Further, the sensor 2 is shielded from light and remains in the detection (◯) state. On the other hand, the disc outer diameter discriminating switch 3 is also kept in the on state because the engagement state between the switch portion 3a of the disc outer diameter discriminating switch 3 and the engaging portion 5b of the lever 5 continues.

  At this stage (the stage when the sensor 1 is not detected), the signal detection means 9 sends a signal of a digital value “010” indicating the state of the sensor 1, sensor 2, and disk outer diameter determination switch 3 to the operation determination means 10. Output. In the operation determination means 10, the digital value “010” input from the signal detection means 9 is stored in a memory (not shown), and the digital values “110” and “010” stored in the previous and current stages are shown in FIG. Is compared with the determination information in the operation determination table shown in FIG. 5B, from the previous state, the sensor 1 is in the non-detection (×) state, the sensor 2 is in the detection (◯) state, and the disk outer diameter determination switch 3 is turned on. Then, it is determined that the insert is not a regular disc but a foreign object, and the determination result is output to the operation control means 12. When the operation control means 12 receives the determination result that the inserted object is the card-like foreign material 16, the operation control means 12 rotates the drive motor 13 in the reverse direction and discharges it.

  As described above, even when the card-like foreign material 16 having a vertical dimension close to the outer diameter of a disk handled as a regular disk is inserted sideways and the disk outer diameter determination switch 3 is turned on, the outer diameter of the regular disk is increased. It does not match the detection of the sensors 1 and 2 according to the dimensions, the non-detection state transition, and the on / off state transition of the disk outer diameter determination switch 3. Thereby, it is possible to accurately discriminate between a regular disk and a foreign object.

  In the above description, the case where the card-like foreign material 16 is inserted sideways from the center of the insertion port is shown. However, even if the card-like foreign material 16 is inserted sideways from the right side or the left side of the insertion port, the state transition between detection and non-detection of the sensors 1 and 2 The on / off state transition of the disk outer diameter determination switch 3 is the same, and is similarly determined as a foreign object.

  As shown in (3) to (6), the motion determination means 10 inserts when a state transition that does not match the information in the motion determination table shown in FIGS. 3 (a) and 3 (b) occurs. It is determined that the object is a foreign object and is discharged from the apparatus.

  As described above, according to the first embodiment, in the sliding process of the levers 4 and 5, the sensor 1 and the sensor provided in the lever 4 are in a relationship in which the state transition is caused by the passage of the center hole of the disk inserted from the insertion slot. 1 is provided on the lever 2 and the sensor 2 that changes its state by the passage of the insert conveyed into the apparatus via 1, and the outside of the disc that determines the outer diameter of the disc by changing the state as the levers 4 and 5 slide. An operation determination table that summarizes combinations of state transitions of the diameter determination switch 3 before insertion of the insert and while the insert is on the transport roller 7, and sensors 1 and 2 and disc outer diameter determination by passage of the insert Since it is configured to collate with the state transition of the switch 3 and discriminate whether or not the disc type corresponds to the outer diameter and whether it is an insert other than the disc. In addition to the determination of the normal disc, authorized disk and insert other than the disk having an equivalent shape (foreign matter) can be accurately determined.

  In the first embodiment, an example in which the disc outer diameter discriminating switch 3 and the sensor 1 are provided on the lever 4 has been described. However, the lever 4 may be provided on the lever 5 side, and the lever 4 contacts the outer diameter of a small-diameter 8 cm disc. What is necessary is just to arrange | position in the position which turns on the disk outer diameter discrimination | determination switch 3 when the part 4a and 5a open.

  Also, in the first embodiment, the discrimination process in the foreign object insertion has been described using the card-like foreign substance 16 having a portion having the same size as the outer diameter of the 8 cm disk 14a. However, the outer diameter of the 12 cm disk 14b is substantially the same. Even if it is a card-shaped foreign material which has the part of the same dimension, it can discriminate similarly. In this case, for example, the 12 cm disk 14 b and the foreign object can be discriminated based on whether or not the state of the sensor 2 changes due to the passage of the center hole 15. Moreover, if the presence / absence of a state transition due to the passage of the center hole 15 of the sensors 1 and 2 is set as a determination condition, it can be accurately determined even if the foreign matter is a disc like a disk.

  Further, in the first embodiment, the normal disk and the disk are used by using the combination of the state transitions of the sensor 1, the sensor 2, and the disk outer diameter discriminating switch 3 when the insert conveyed into the apparatus is on the conveying roller 7. In order to discriminate inserts other than those, the foreign matter is present on the transport roller 7 when it is judged that the foreign matter transported into the apparatus is “foreign matter”. Thereby, it is possible to reliably discharge foreign matter.

It is a top view which shows the disc and foreign material discrimination mechanism of the disc apparatus by Embodiment 1 of this invention. FIG. 3 is a block diagram illustrating a disc and foreign matter discrimination processing configuration of the disc device according to the first embodiment. It is a figure which shows the operation | movement determination table by Embodiment 1. FIG. It is a top view which shows an 8 cm disc and discrimination | determination mechanism in an insertion confirmation state. It is a top view which shows the conveyed 8 cm disc and the discrimination mechanism. It is a top view which shows the 8 cm disc conveyed to the reproduction position in an apparatus, and a discrimination mechanism. It is a top view which shows the 12-cm disc and discrimination | determination mechanism in an insertion confirmation state. It is a top view which shows the 12-cm disk conveyed in the apparatus, and a discrimination mechanism. It is a top view which shows the 12-cm disk conveyed in the apparatus, and a discrimination mechanism. It is a top view which shows the 12-cm disk conveyed in the apparatus, and a discrimination mechanism. It is a top view which shows the 12 cm disc conveyed to the reproduction position in an apparatus, and a discrimination mechanism. It is a top view which shows the card-like foreign material of a state of insertion confirmation when a card-like foreign material is inserted vertically from the center of the insertion slot, and a discrimination mechanism. It is a top view which shows the card-like foreign material conveyed in the apparatus, and a discrimination mechanism. It is a top view which shows the card-like foreign material and the discrimination mechanism in the insertion confirmation state when the card-like foreign material is inserted vertically from the right side of the insertion slot. It is a top view which shows the card-like foreign material conveyed in the apparatus, and a discrimination mechanism. It is a top view which shows the card-like foreign material in the insertion confirmation state when the card-like foreign material is inserted vertically from the left side of the insertion slot, and the discrimination mechanism. It is a top view which shows the card-like foreign material conveyed in the apparatus, and a discrimination mechanism. It is a top view which shows the card-like foreign material inserted in the horizontal direction, and a discrimination mechanism. It is a top view which shows the card-like foreign material conveyed in the apparatus in the horizontal direction, and a discrimination mechanism. It is a top view which shows the card-like foreign material conveyed in the apparatus in the horizontal direction, and a discrimination mechanism.

Explanation of symbols

  1, 2 sensors (first detection means, second detection means), 3 disk outer diameter determination switch (outer diameter determination means), 3a switch portion, 4,5 lever, 4a, 5a contact portion, 5b engagement portion, 6a, 6b Spring, 7 Conveying roller, 8 Playback deck section, 9 Signal detection means, 10 Operation determination means, 11 Storage means, 12 Operation control means, 13 Motor, 14a, 14b Disk, 15 Center hole, 16 Card-like foreign matter.

Claims (2)

A pair of levers provided at the insertion port of the device, provided with a biasing force in the direction of contact with each other, and slid in a direction away from the outer shape of the insert;
A first detecting means provided in the lever in a state in which a state transition is caused by passage of at least one center hole among discs to be discriminated inserted through the insertion slot in the sliding process of the lever;
Second detection means that changes state by passage of an insert conveyed into the apparatus via the first detection means;
An outer diameter discriminating means that is provided on the lever, changes state as the lever slides, and discriminates the outer diameter of the disc;
A determination table in which combinations of state transitions of the first detection unit, the second detection unit, and the outer diameter determination unit according to the outer diameter of the disk and the presence or absence of a center hole are combined, and the first by the passage of an insert A detection means, a state determination means for checking whether the second detection means and the state transition of the outer diameter determination means are in accordance with the disc type corresponding to the outer diameter and whether the insert is other than the disk. Disk unit.   2. The disk apparatus according to claim 1, further comprising operation control means for controlling the driving of the conveying roller according to the determination result of the operation determination means to send and eject the insert.

Images